import { Message } from 'element-ui'
import store from '@/store'
import dayjs from 'dayjs'
import * as imageConversion from 'image-conversion'

/**
 * @desc 判断非空
 * @param {String} str
 * @returns {Boolean}
 */
export function isNull(str) {
  return !!(!str && str !== 0 && typeof str !== 'boolean')
}

/**
 * @desc 清除多余筛选字段
 * @returns {Object}
 */
export function clearFilterFormFields(params = {}) {
  for (const key in params) {
    if (isNull(params[key]) || typeObject(params[key]) === 'Array' && (params[key].length === 0 || params[key].includes('') || params[key].includes('all'))) delete params[key]
  }
  return params
}
// 日期格式化
export function dateFtt(fmt, date) {
  date = new Date(date)
  // fmt 格式化时间格式 yyyy-MM-dd hh:mm:ss
  var o = {
    'M+': date.getMonth() + 1, // 月份
    'd+': date.getDate(), // 日
    'h+': date.getHours(), // 小时
    'm+': date.getMinutes(), // 分
    's+': date.getSeconds(), // 秒
    'q+': Math.floor((date.getMonth() + 3) / 3), // 季度
    'S': date.getMilliseconds() // 毫秒
  }
  if (/(y+)/.test(fmt)) { fmt = fmt.replace(RegExp.$1, (date.getFullYear() + '').substr(4 - RegExp.$1.length)) }
  for (var k in o) {
    if (new RegExp('(' + k + ')').test(fmt)) { fmt = fmt.replace(RegExp.$1, (RegExp.$1.length == 1) ? (o[k]) : (('00' + o[k]).substr(('' + o[k]).length))) }
  }
  return fmt
}
/**
 * @desc 判断是否是对象
 * @returns {String}
 */
export function typeObject(obj) {
  const type = Object.prototype.toString.call(obj)
  if (type === '[object Array]') {
    return 'Array'
  } else if (type === '[object Object]') {
    return 'Object'
  } else {
    return 'obj is not object or array'
  }
}

/**
 * @desc 判断是否有权限
 * @returns {Boolean}
 */
export function isAuthBtn(array = []) {
  const banArr = store.state.user.userBanBtnList
  // return !banArr.length || !array.length || !array.some(v => { banArr.includes(v) })
  return !banArr.length || !array.length || [...new Set(banArr.concat(array))].length !== banArr.length
}

/**
 * @desc 报表快捷时间
 * @returns {Array}
 */
export function formatQuickDate(days, mode = 'YYYY-MM-DD') {
  const dateArr = []
  switch (days) {
    case 0:
      dateArr[0] = dayjs().format('YYYY-MM-DD') + (mode === 'YYYY-MM-DD' ? '' : ' 00:00:00')
      dateArr[1] = dayjs().format('YYYY-MM-DD') + (mode === 'YYYY-MM-DD' ? '' : ' 23:59:59')
      break
    case 'yesterday':
      dateArr[0] = dayjs().subtract(1, 'days').format('YYYY-MM-DD') + (mode === 'YYYY-MM-DD' ? '' : ' 00:00:00')
      dateArr[1] = dayjs().subtract(1, 'days').format('YYYY-MM-DD') + (mode === 'YYYY-MM-DD' ? '' : ' 23:59:59')
      break
    case 'nowMonth':
      dateArr[0] = dayjs().startOf('month').format('YYYY-MM-DD') + (mode === 'YYYY-MM-DD' ? '' : ' 00:00:00')
      dateArr[1] = dayjs().format(mode === 'YYYY-MM-DD' ? 'YYYY-MM-DD' : 'YYYY-MM-DD HH:mm:ss')
      break
    default:
      dateArr[0] = dayjs().subtract(days, 'days').format('YYYY-MM-DD') + (mode === 'YYYY-MM-DD' ? '' : ' 00:00:00')
      dateArr[1] = dayjs().subtract(1, 'days').format('YYYY-MM-DD') + (mode === 'YYYY-MM-DD' ? '' : ' 23:59:59')
      break
  }
  return dateArr
}

/**
 * @desc 获取对象指定deep值
 * @returns
 */
export function fetchObjectDeepValue(obj, keyString) {
  return keyString.split('.').reduce((result, val) => {
    return result && result[val] || null
  }, obj)
}

/**
 * @desc 深度克隆 If you want to use a perfect deep copy, use lodash's _.cloneDeep
 * @param {Object} source
 * @returns {Object}
 */
export function deepClone(source) {
  if (!source && typeof source !== 'object') {
    throw new Error('error arguments', 'deepClone')
  }
  const targetObj = source.constructor === Array ? [] : {}
  Object.keys(source).forEach(keys => {
    if (source[keys] && typeof source[keys] === 'object') {
      targetObj[keys] = deepClone(source[keys])
    } else {
      targetObj[keys] = source[keys]
    }
  })
  return targetObj
}

// 上传cert
export function beforeUploadCert(file, vue, type = '.p12') {
  // const isType = file.type === "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet";
  // if (!isType) {
  //   vue.$alert("格式错误，请上传xlsx格式的Excel文件", "温馨提示", {
  //     confirmButtonText: "确定",
  //     center: true,
  //     type: "warning",
  //     callback: action => {}
  //   });
  //   return false;
  // }
  if ((file.name).substring((file.name).lastIndexOf('.')) !== type) {
    vue.$alert(`格式错误，请上传${type}格式的文件`, '温馨提示', {
      confirmButtonText: '确定',
      center: true,
      type: 'warning',
      callback: action => { }
    })
    return false
  }
  // const rightSizes = file.size / 1024 / 1024 < sizes;
  // if (!rightSizes) {
  //   this.$message.error(`上传文件大小不能超过 1MB!`);
  //   return false;
  // }
  // }
  return true
}

/**
 * @param {Function} func
 * @param {number} wait
 * @param {boolean} immediate
 * @return {*}
 */
export function debounce(func, wait, immediate) {
  let timeout, args, context, timestamp, result

  const later = function() {
    // 据上一次触发时间间隔
    const last = +new Date() - timestamp

    // 上次被包装函数被调用时间间隔 last 小于设定时间间隔 wait
    if (last < wait && last > 0) {
      timeout = setTimeout(later, wait - last)
    } else {
      timeout = null
      // 如果设定为immediate===true，因为开始边界已经调用过了此处无需调用
      if (!immediate) {
        result = func.apply(context, args)
        if (!timeout) context = args = null
      }
    }
  }

  return function(...args) {
    context = this
    timestamp = +new Date()
    const callNow = immediate && !timeout
    // 如果延时不存在，重新设定延时
    if (!timeout) timeout = setTimeout(later, wait)
    if (callNow) {
      result = func.apply(context, args)
      context = args = null
    }

    return result
  }
}

// /**
//  * @desc 防抖函数
//  * @param fn 目标函数
//  * @param wait 延迟执行毫秒数
//  */
// export function debounce(fn, wait = 500) {
//   let timer = null
//   return function() {
//     const now = !timer
//     timer && clearTimeout(timer)
//     timer = setTimeout(() => {
//       timer = null
//     }, wait)
//     if (now) {
//       fn.apply(this, arguments)
//     }
//   }
// }

/**
 * @desc 节流函数
 * @param fn 目标函数
 * @param wait 延迟执行毫秒数
 */
export function throttle(fn, wait = 500) {
  let last = 0
  return function() {
    const now = Date.now()
    if (now - last > wait) {
      fn.apply(this, arguments)
      last = now
    }
  }
}
// 上传
export function beforeUploadImg(file, vue, imgWidth, imgHeight, imgSizes) {
  const isType = file.type === 'image/jpeg' || file.type === 'image/png'
  if (!isType) {
    vue.$message.error('上传图片只能是 JPG/PNG 格式!')
    return false
  }

  const rightSizes = file.size / 1024 / 1024 < imgSizes
  if (!rightSizes) {
    if (imgSizes >= 1) {
      vue.$message.error(`上传图片大小不能超过 ${imgSizes}MB!`)
    } else {
      vue.$message.error(`上传图片大小不能超过 ${imgSizes * 1000}KB!`)
    }
    return false
  }

  vue.uploadHeaders = {
    'X-KDADMIN-TOKEN': vue.$store.state.user.token
  }

  // 不限制宽高
  if (imgWidth === 0 && imgHeight === 0) {
    return true
  }

  // 限制宽高
  const isSize = new Promise(function(resolve, reject) {
    const width = imgWidth
    const height = imgHeight
    const _URL = window.URL || window.webkitURL
    const img = new Image()
    img.onload = function() {
      const valid = img.width <= width && img.height <= height
      valid ? resolve() : reject()
    }
    img.src = _URL.createObjectURL(file)
  }).then(
    () => {
      return file
    },
    () => {
      vue.$message.error(`上传图片像素大小不能超过 ${imgWidth}*${imgHeight}px!`)
      return Promise.reject()
    }
  )
  return isSize
}
// 上传图片
export async function uploadImgBefore({ file, maxWidth = 0, maxHeight = 0, maxSizes = 1, fileType = ['JPG', 'PNG', 'GIF'], fileGzip = true }) {
  console.log('file', file)
  const fileTypeMap = {
    JPG: 'image/jpeg',
    PNG: 'image/png',
    GIF: 'image/gif'
  }
  const fileTypeArr = []
  fileType.forEach(v => {
    if (fileTypeMap[v]) fileTypeArr.push(fileTypeMap[v])
  })
  const rightType = !!fileTypeArr.includes(file.type)
  // 判断类型
  if (!rightType) {
    Message.error(`上传图片只能是 ${fileType.join('/')} 格式!`)
    return false
  }

  // 启用压缩
  const rightSizeGzip = file.size / 1024 / 1024 < maxSizes
  if (fileGzip && !rightSizeGzip) await imageConversion.compressAccurately(file, maxSizes * 1024 * 0.8).then((res) => { file = res })

  // 判断size
  const rightSize = file.size / 1024 / 1024 < maxSizes
  if (!rightSize) {
    maxSizes >= 1 ? Message.error(`上传图片大小不能超过 ${maxSizes}MB!`) : Message.error(`上传图片大小不能超过 ${maxSizes * 1000}KB!`)
    return false
  }

  // 判断尺寸
  if (maxWidth === 0 && maxHeight === 0) return file
  const rightPx = new Promise(function(resolve, reject) {
    const _URL = window.URL || window.webkitURL
    const img = new Image()
    img.onload = function() {
      console.log(img.width)
      const valid = img.width <= maxWidth && img.height <= maxHeight
      valid ? resolve() : reject()
    }
    img.src = _URL.createObjectURL(file)
  }).then(
    () => {
      return file
    },
    () => {
      Message.error(`上传图片像素大小不能超过 ${maxWidth}*${maxHeight}px!`)
      return Promise.reject()
      // return false
    }
  )
  return rightPx
}

export function parseTime(time, cFormat) {
  if (arguments.length === 0 || !time) {
    return null
  }
  const format = cFormat || '{y}-{m}-{d} {h}:{i}:{s}'
  let date
  if (typeof time === 'object') {
    date = time
  } else {
    if ((typeof time === 'string')) {
      if ((/^[0-9]+$/.test(time))) {
        // support "1548221490638"
        time = parseInt(time)
      } else {
        // support safari
        // https://stackoverflow.com/questions/4310953/invalid-date-in-safari
        time = time.replace(new RegExp(/-/gm), '/')
      }
    }

    if ((typeof time === 'number') && (time.toString().length === 10)) {
      time = time * 1000
    }
    date = new Date(time)
  }
  const formatObj = {
    y: date.getFullYear(),
    m: date.getMonth() + 1,
    d: date.getDate(),
    h: date.getHours(),
    i: date.getMinutes(),
    s: date.getSeconds(),
    a: date.getDay()
  }
  const time_str = format.replace(/{([ymdhisa])+}/g, (result, key) => {
    const value = formatObj[key]
    // Note: getDay() returns 0 on Sunday
    if (key === 'a') {
      return ['日', '一', '二', '三', '四', '五', '六'][value]
    }
    return value.toString().padStart(2, '0')
  })
  return time_str
}

/**
 * @param {number} time
 * @param {string} option
 * @returns {string}
 */
export function formatTime(time, option) {
  if (('' + time).length === 10) {
    time = parseInt(time) * 1000
  } else {
    time = +time
  }
  const d = new Date(time)
  const now = Date.now()

  const diff = (now - d) / 1000

  if (diff < 30) {
    return '刚刚'
  } else if (diff < 3600) {
    // less 1 hour
    return Math.ceil(diff / 60) + '分钟前'
  } else if (diff < 3600 * 24) {
    return Math.ceil(diff / 3600) + '小时前'
  } else if (diff < 3600 * 24 * 2) {
    return '1天前'
  }
  if (option) {
    return parseTime(time, option)
  } else {
    return (
      d.getMonth() +
      1 +
      '月' +
      d.getDate() +
      '日' +
      d.getHours() +
      '时' +
      d.getMinutes() +
      '分'
    )
  }
}

/**
 * @param {string} url
 * @returns {Object}
 */
export function getQueryObject(url) {
  url = url == null ? window.location.href : url
  const search = url.substring(url.lastIndexOf('?') + 1)
  const obj = {}
  const reg = /([^?&=]+)=([^?&=]*)/g
  search.replace(reg, (rs, $1, $2) => {
    const name = decodeURIComponent($1)
    let val = decodeURIComponent($2)
    val = String(val)
    obj[name] = val
    return rs
  })
  return obj
}

/**
 * @param {string} input value
 * @returns {number} output value
 */
export function byteLength(str) {
  // returns the byte length of an utf8 string
  let s = str.length
  for (var i = str.length - 1; i >= 0; i--) {
    const code = str.charCodeAt(i)
    if (code > 0x7f && code <= 0x7ff) {
      s++
    } else if (code > 0x7ff && code <= 0xffff) s += 2
    if (code >= 0xDC00 && code <= 0xDFFF) i--
  }
  return s
}

/**
 * @param {Array} actual
 * @returns {Array}
 */
export function cleanArray(actual) {
  const newArray = []
  for (let i = 0; i < actual.length; i++) {
    if (actual[i]) {
      newArray.push(actual[i])
    }
  }
  return newArray
}

/**
 * @param {Object} json
 * @returns {Array}
 */
export function param(json) {
  if (!json) return ''
  return cleanArray(
    Object.keys(json).map(key => {
      if (json[key] === undefined) return ''
      return encodeURIComponent(key) + '=' + encodeURIComponent(json[key])
    })
  ).join('&')
}

/**
 * @param {string} url
 * @returns {Object}
 */
export function param2Obj(url) {
  const search = decodeURIComponent(url.split('?')[1]).replace(/\+/g, ' ')
  if (!search) {
    return {}
  }
  const obj = {}
  const searchArr = search.split('&')
  searchArr.forEach(v => {
    const index = v.indexOf('=')
    if (index !== -1) {
      const name = v.substring(0, index)
      const val = v.substring(index + 1, v.length)
      obj[name] = val
    }
  })
  return obj
}

/**
 * @param {string} val
 * @returns {string}
 */
export function html2Text(val) {
  const div = document.createElement('div')
  div.innerHTML = val
  return div.textContent || div.innerText
}

/**
 * Merges two objects, giving the last one precedence
 * @param {Object} target
 * @param {(Object|Array)} source
 * @returns {Object}
 */
export function objectMerge(target, source) {
  if (typeof target !== 'object') {
    target = {}
  }
  if (Array.isArray(source)) {
    return source.slice()
  }
  Object.keys(source).forEach(property => {
    const sourceProperty = source[property]
    if (typeof sourceProperty === 'object') {
      target[property] = objectMerge(target[property], sourceProperty)
    } else {
      target[property] = sourceProperty
    }
  })
  return target
}

/**
 * @param {HTMLElement} element
 * @param {string} className
 */
export function toggleClass(element, className) {
  if (!element || !className) {
    return
  }
  let classString = element.className
  const nameIndex = classString.indexOf(className)
  if (nameIndex === -1) {
    classString += '' + className
  } else {
    classString =
      classString.substr(0, nameIndex) +
      classString.substr(nameIndex + className.length)
  }
  element.className = classString
}

/**
 * @param {string} type
 * @returns {Date}
 */
export function getTime(type) {
  if (type === 'start') {
    return new Date().getTime() - 3600 * 1000 * 24 * 90
  } else {
    return new Date(new Date().toDateString())
  }
}

/**
 * @param {Array} arr
 * @returns {Array}
 */
export function uniqueArr(arr) {
  return Array.from(new Set(arr))
}

/**
 * @returns {string}
 */
export function createUniqueString() {
  const timestamp = +new Date() + ''
  const randomNum = parseInt((1 + Math.random()) * 65536) + ''
  return (+(randomNum + timestamp)).toString(32)
}

/**
 * Check if an element has a class
 * @param {HTMLElement} elm
 * @param {string} cls
 * @returns {boolean}
 */
export function hasClass(ele, cls) {
  return !!ele.className.match(new RegExp('(\\s|^)' + cls + '(\\s|$)'))
}

/**
 * Add class to element
 * @param {HTMLElement} elm
 * @param {string} cls
 */
export function addClass(ele, cls) {
  if (!hasClass(ele, cls)) ele.className += ' ' + cls
}

/**
 * Remove class from element
 * @param {HTMLElement} elm
 * @param {string} cls
 */
export function removeClass(ele, cls) {
  if (hasClass(ele, cls)) {
    const reg = new RegExp('(\\s|^)' + cls + '(\\s|$)')
    ele.className = ele.className.replace(reg, ' ')
  }
}

// 导表
export function downloadFile(data, fileName) {
  if (!data) {
    return
  }

  const timeStr = new Date()
  const fileTime =
      timeStr.getFullYear() +
      '' +
      (timeStr.getMonth() < 9
        ? '0' + (timeStr.getMonth() + 1)
        : timeStr.getMonth() + 1) +
      '' +
      (timeStr.getDate() < 10 ? '0' + timeStr.getDate() : timeStr.getDate()) +
      '' +
      timeStr.getHours() +
      '' +
      timeStr.getMinutes() +
      '' +
      timeStr.getSeconds()
  const link = document.createElement('a')
  const blob = new Blob([data], {
    type: 'application/vnd.ms-excel'
  })
  link.style.display = 'none'
  link.href = URL.createObjectURL(blob)
  link.setAttribute('download', `${fileName}` + '.xlsx')
  document.body.appendChild(link)
  link.click()
  document.body.removeChild(link)
}
